@article{ref1,
title="On the Errors in the Course of Vessels, Occasioned by Local Attraction; With Some Remarks on the Recent Loss of His Majesty's Ship Thetis",
journal="Philosophical transactions of the Royal Society of London",
year="1831",
author="Barlow, Peter",
volume="121",
number="",
pages="215-221",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0261-0523",
doi="",
url="http://dx.doi.org/"
}